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THE IMPORTANCE OF EVALUATING SUBSOIL CORROSION AND ITS EFFECTS ON BURIED STRUCTURES

Soils have been found to vary greatly in their corrosion behaviour towards buried structures such as steel piles and pipe lines. In this paper the mechanism of corrosion of steel in soil is discussed and the factors contributing to soil corrosivity are mentioned with special reference to bacteria corrosion. The importance of recognising the development of long line currents in soils is stressed. Some data on corrosivity measurements on peaty soils and on soils from reclaimed land are discussed. The need for a rational approach in the prediction of corrosivity of soils and in the provision of corrosion protection measures is emphasized. /Author/TRRL/